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write_metrics.go
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write_metrics.go
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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package metrics
import (
"time"
"github.com/uber/jaeger-lib/metrics"
)
// WriteMetrics is a collection of metrics for write operations.
type WriteMetrics struct {
Attempts metrics.Counter `metric:"attempts"`
Inserts metrics.Counter `metric:"inserts"`
Errors metrics.Counter `metric:"errors"`
LatencyOk metrics.Timer `metric:"latency-ok"`
LatencyErr metrics.Timer `metric:"latency-err"`
}
// NewWriteMetrics takes a metrics scope and creates a metrics struct
func NewWriteMetrics(factory metrics.Factory, tableName string) *WriteMetrics {
t := &WriteMetrics{}
metrics.Init(t, factory.Namespace(tableName, nil), nil)
return t
}
// Emit will record success or failure counts and latency metrics depending on the passed error.
func (t *WriteMetrics) Emit(err error, latency time.Duration) {
t.Attempts.Inc(1)
if err != nil {
t.LatencyErr.Record(latency)
t.Errors.Inc(1)
} else {
t.LatencyOk.Record(latency)
t.Inserts.Inc(1)
}
}